1.

Solve : Dell Deminsion will not power up?

Answer»

My d521 will not POWER up.  If I unplug the 4 PRONG connector right at the memory SLOTS, then the power supply STARTS but the computer still will not boot.  I don't know how to trouble shoot the mother board.  I have new memory installedIs this occurrence happening right after you installed your new memory? truenorth Dell has no listing for a Dimension D521.  I think the connector you are referring to is known as the P4 connector; it provides ADDITIONAL +12VDC to the motherboard.  It's possible the power supply has failed.

http://www.helpwithpcs.com/courses/power-supply-basics-inc-pinouts.htm



Discussion

No Comment Found